Dead as hell

Fourteen-year-old Emma is hit and killed by a train going home from school When she woke up again, she found herself in a room, of a ship named SS Nile. She met a girl named Taylor, who turns out is dead, like her. She watched her own funeral from the 'Observation Deck', or OD in short, and learned that though she is able to see Earth, she is not allowed to make contact to Earth. The ship arrived at a place called 'Elsewhere', in Elsewhere, everyone ages backwards until they are 7 days old and are sent back to Earth as a baby.